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internal/lsp: use ranges instead of positions in completion items 

Fixes golang/go#32078

Change-Id: If33cc6f7a914e6ef17d06a34c39dceb61cfa16d4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/177657
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
This commit is contained in:
Rebecca Stambler 2019-05-16 15:57:51 -04:00
parent b9584148ef
commit 1a8f2608bd
1 changed files with 8 additions and 8 deletions
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16
internal/lsp/completion.go
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@ -35,25 +35,28 @@ func (s *Server) completion(ctx context.Context, params *protocol.CompletionPara
s.session.Logger().Infof(ctx, "no completions found for %s:%v:%v: %v", uri, int(params.Position.Line), int(params.Position.Character), err)
}
// We might need to adjust the position to account for the prefix.
pos := params.Position
prefixRng := protocol.Range{
Start: params.Position,
End: params.Position,
}
if prefix.Pos().IsValid() {
spn, err := span.NewRange(view.FileSet(), prefix.Pos(), 0).Span()
if err != nil {
s.session.Logger().Infof(ctx, "failed to get span for prefix position: %s:%v:%v: %v", uri, int(params.Position.Line), int(params.Position.Character), err)
}
if prefixPos, err := m.Position(spn.Start()); err == nil {
pos = prefixPos
prefixRng.End = prefixPos
} else {
s.session.Logger().Infof(ctx, "failed to convert prefix position: %s:%v:%v: %v", uri, int(params.Position.Line), int(params.Position.Character), err)
}
}
return &protocol.CompletionList{
IsIncomplete: false,
Items: toProtocolCompletionItems(items, prefix.Content(), pos, s.insertTextFormat, s.usePlaceholders),
Items: toProtocolCompletionItems(items, prefix.Content(), prefixRng, s.insertTextFormat, s.usePlaceholders),
}, nil
}
func toProtocolCompletionItems(candidates []source.CompletionItem, prefix string, pos protocol.Position, insertTextFormat protocol.InsertTextFormat, usePlaceholders bool) []protocol.CompletionItem {
func toProtocolCompletionItems(candidates []source.CompletionItem, prefix string, rng protocol.Range, insertTextFormat protocol.InsertTextFormat, usePlaceholders bool) []protocol.CompletionItem {
sort.SliceStable(candidates, func(i, j int) bool {
return candidates[i].Score > candidates[j].Score
})
@ -73,10 +76,7 @@ func toProtocolCompletionItems(candidates []source.CompletionItem, prefix string
Kind: toProtocolCompletionItemKind(candidate.Kind),
TextEdit: &protocol.TextEdit{
NewText: insertText,
Range: protocol.Range{
Start: pos,
End: pos,
},
Range: rng,
},
InsertTextFormat: insertTextFormat,
// This is a hack so that the client sorts completion results in the order